springmv返回JSON数据格式

1.先导入依赖

<!-- springmvc使用@responseBody  start-->

<dependency>

    <groupId>com.fasterxml.jackson.core</groupId>

    <artifactId>jackson-core</artifactId>

    <version>2.4.3</version>

</dependency>

<dependency>

    <groupId>com.fasterxml.jackson.core</groupId>

    <artifactId>jackson-databind</artifactId>

    <version>2.4.3</version>

</dependency>

<!-- springmvc使用@responseBody  end-->

2.Controller代码

//返回数据的json格式:  [{ id:2, pId:0, name:"系统管理", checked:true, open:true}]

@RequestMapping("/genzTreeNodes")

@ResponseBody

public List<HashMap<String, Object>> genzTreeNodes(Role role){

    List<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();

    //遍历模块列表

    List<Module> moduleList = moduleService.find()//获取所有模块列表

    for (Module module : moduleList) {

        HashMap<String, Object> map = new HashMap<String, Object>();

        map.put("id", module.getId());

        //添加字符串

        map.put("pId", module.getParentId());

        map.put("name", module.getName());

        //添加布尔类型

        map.put("checked", true);

        data.add(map);

    }

    //返回数据

    return data;

}